Apart from being a great tool rhino has a great community, I'm glad I can help others like others have helped me before. You welcome. Anytime.

Yes, you can also bake the rectangle for the panel size, or draw a new one in rhino and select the rectangle and those hexagons at the same time and make a solid extrusion from closed planar curves.

I'm from Mexico, I self learned rhino when I was at school, now it's my primary tool for my work as an industrial designer, I also use it for geometry, technical drawing and 3D modeling clases I give.

Grasshopper geometry doesn't really exist on rhino, you bake it by right clicking the component you want on rhino and select "bake" (egg icon) what it does it's convert the floating dynamic geometry into Rhino geometry wich you can't modify on gh anymore.

In this case, last parameter it's the hexagon curves, after you bake them you work with them on rhino as if you have drawed them manually yourself with the rhino polygon tool.